Answer:
<h2>3z + 3z (the 3rd option) </h2>
Step-by-step explanation:
1) The first option comprises of seven like terms and one 6, which would result in 7z + 6.
2) The second option is blank.
3) The third option comprises of two numbers with like terms that actually do add up to 6z.
4) The fourth option is z multiplied by itself 6 times, which is z to the power of 6 or z⁶.
5) The fifth option is z divided by 1/6, which is
.
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<em>I hope this helps! Have a blessed day!</em>